CN102460230A - Fresnel lens sheet for solar collection and design method therefor - Google Patents
Fresnel lens sheet for solar collection and design method therefor Download PDFInfo
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- CN102460230A CN102460230A CN2010800337937A CN201080033793A CN102460230A CN 102460230 A CN102460230 A CN 102460230A CN 2010800337937 A CN2010800337937 A CN 2010800337937A CN 201080033793 A CN201080033793 A CN 201080033793A CN 102460230 A CN102460230 A CN 102460230A
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- ultraviolet light
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000012360 testing method Methods 0.000 claims abstract description 68
- 230000003287 optical effect Effects 0.000 claims abstract description 42
- 238000002834 transmittance Methods 0.000 claims abstract description 27
- 239000011347 resin Substances 0.000 claims abstract description 22
- 229920005989 resin Polymers 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 21
- 230000007423 decrease Effects 0.000 claims abstract description 15
- 230000006866 deterioration Effects 0.000 claims abstract description 9
- 229910001507 metal halide Inorganic materials 0.000 claims abstract description 5
- 150000005309 metal halides Chemical class 0.000 claims abstract description 5
- 229940124543 ultraviolet light absorber Drugs 0.000 claims description 38
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 36
- -1 acryl Chemical group 0.000 claims description 6
- 239000012964 benzotriazole Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 125000003354 benzotriazolyl group Chemical group N1N=NC2=C1C=CC=C2* 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 abstract 2
- 230000001133 acceleration Effects 0.000 abstract 1
- 238000005286 illumination Methods 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 7
- 230000007774 longterm Effects 0.000 description 6
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 4
- 239000004926 polymethyl methacrylate Substances 0.000 description 4
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920005668 polycarbonate resin Polymers 0.000 description 2
- 239000004431 polycarbonate resin Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 208000035126 Facies Diseases 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 241000411851 herbal medicine Species 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
- G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/30—Arrangements for concentrating solar-rays for solar heat collectors with lenses
- F24S23/31—Arrangements for concentrating solar-rays for solar heat collectors with lenses having discontinuous faces, e.g. Fresnel lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0038—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with ambient light
- G02B19/0042—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with ambient light for use with direct solar radiation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
- H01L31/0543—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means comprising light concentrating means of the refractive type, e.g. lenses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S2201/00—Prediction; Simulation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/52—PV systems with concentrators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy
Abstract
Provided is a method for designing a resin optical sheet for solar collection, said sheet containing an ultraviolet absorption agent in a base material. Also provided is a resin optical sheet for solar collection, said sheet obtained by means of the aforementioned method. The provided method is characterized in that the amount of the ultraviolet absorption agent contained in the base material is decided such that the results of an accelerated deterioration test by means of a metal halide lamp weathering test (device specification: JTM G 01:2000, Japan Testing Machinery Association) are as follows: the decrease in average transmittance for wavelengths in the region between 400 and 1,850 nm after illumination for a time T1 satisfies the relation tuv(0) + tuv(T1) > t0(0) + t0(T1); and the decrease in transmittance from the initial value is at most 10% for each wavelength in the aforementioned wavelength region. T1 is the acceleration test time that is required corresponding to the actual place of usage. The provided optical sheet can efficiently collect light without a decrease in transmittance when used for a long period of time in an environment with a large amount of ultraviolet radiation.
Description
Technical field
The present invention relates to make Fresnel lens and the method for designing of using from the sunshine optically focused of the function of the direct light optically focused of the sun thereof in that sunshine optically focused is had in the solar power generation facility of seeking to improve generating efficiency to solar battery cell.
Background technology
The light-focusing type solar power generating device is the device that makes sunshine optically focused make generating to the solar cell by means of collector lens.As long as solar cell has the area that can receive by the light of lens light gathering, therefore can make than the little a lot of size of lens sizes, reduce in TRT the especially use amount of expensive solar cell, thereby reduce cost.On the other hand, in order to use lens, use in area that must many at direct light (sunshine-duration is long).According to this point, the light-focusing type solar power generating device is long in the sunshine-duration, have the area in vast soil that can large tracts of landization universal day by day as the purposes that is used to supply power.As the device example of light-focusing type TRT, can enumerate patent documentation 1 etc.
In order to utilize light expeditiously, the lens that are used with optical applications usually adopt high acryl resin of the transparency or polycarbonate resin etc.In order to prevent that influence because of ultraviolet ray etc. from causing lens to be colored and situation such as resin deterioration takes place, in these resins, add the ultraviolet light absorber of ormal weight usually.At the indoor screen of TV or the member that back of the body illuminator is used of being used as, the ultraviolet ray amount of direct irradiation is low usually for these optical components, and the UVA agent concentration of interpolation is also low.Again, shown in patent documentation 2, through a large amount of interpolation ultraviolet light absorbers; Can improve the photostability of resin; Cause coloring phenomenon but ultraviolet light absorber can take place, the problem of outward appearance aspects such as the problem of degradation optics aspect and painted flavescence also can produce the problem that mouldability reduces under the generation transmissivity; Therefore, generally add with low concentration usually as far as possible.
But; Because the sunshine collector lens is the such long-term use more than 20 years of the environment that shine very in a large number in ultraviolet ray and needs; Because these reasons; Both needed a large amount of interpolation ultraviolet light absorbers as above-mentioned, also will consider the influence of the transmissivity decline painted, that deterioration produced on the other hand and influence that mouldability is brought etc., but present situation had been not know the appropriate amount of ultraviolet light absorber.
Patent documentation 1: TOHKEMY 2006-343435 communique
Patent documentation 2: japanese kokai publication hei 05-156113 communique embodiment etc.
Summary of the invention
Seek to develop a kind of existing optical applications of comparing, at the super amount irradiation environment of ultraviolet ray and be under the long-term condition of using, have that transmissivity does not descend and lens that can high-level efficiency optically focused performance.
The problems referred to above can be passed through the method for designing solution of the sunshine optically focused of the following stated with optical sheet, and this method is in base material, to comprise the method for designing of the sunshine optically focused of ultraviolet light absorber with optical sheet, it is characterized in that,
In the activated deterioration test that utilizes metal halide lamp formula atmospheric exposure test (device specification: JTM G 01:2000, Japanese testing machine industry meeting) to carry out,
Through T
1Hour irradiation time test after the decline of average transmittance of 400nm～1850nm wavelength region may satisfy following formula (1), promptly
τuv(0)+τuv(T
1)＞τ
0(0)+τ
0(T) ……(1)，
And the amount of the ultraviolet light absorber that contains in the decision base material makes the transmissivity of each wavelength in said wavelength region may descend below 10% from initial value,
Wherein,
T
1＝150×2.5×U
1/U
0
×{0.44×1n(W
1/W
0)+0.88}
×{(0.5×cos(α
1-23.4))+cos?α
1}/{(0.5×cos(α
0-23.4))+cosα
0} …(2)
U
1: use sunshine optically focused with the average sunshine time under the environment of optical sheet
W
1: use sunshine optically focused with the average steam vapour amount under the environment of optical sheet
α
1: use the latitude of sunshine optically focused with the place of optical sheet
U
0: the actual sunshine-duration of implementing the place (Japanese Miyako Jima) of outdoor exposure test
W
0: the actual average steam vapour amount of implementing the place (Japanese Miyako Jima) of outdoor exposure test
α
0: the actual latitude of implementing the place (Japanese Miyako Jima) of outdoor exposure test
τ uv (0): sunshine optically focused of the present invention is with the average transmittance of the preceding 400nm～1850nm wavelength region may of the atmospheric exposure test of optical sheet
τ uv (T
1): sunshine optically focused of the present invention with optical sheet through atmospheric exposure test T
1The average transmittance of the 400nm after hour～1850nm wavelength region may
τ
0(0): except that the average transmittance that does not contain the 400nm～1850nm wavelength region may of sunshine optically focused identical the ultraviolet light absorber before with the atmospheric exposure test of optical sheet with the present invention
τ
0(T
1): except that not containing the atmospheric exposure test T of sunshine optically focused identical the ultraviolet light absorber with optical sheet with the present invention
1The average transmittance of the 400nm after hour～1850nm wavelength region may.
Again, among the present invention, the decline of average transmittance with respect to initial value preferably below 7%, in each wavelength region may of 400nm～1000nm the decline of transmissivity with respect to initial value preferably below 10%.
Again, above-mentioned sunshine optically focused of the present invention use optical sheet preferably its base material be acryl resin, ultraviolet light absorber is a benzotriazole, if ultraviolet light absorber adds then better more than the 1400ppm at least.
Also have, the problems referred to above can solve through the method for designing of sunshine optically focused with optical sheet, and this method is in base material, to comprise the method for designing of the resin system sunshine optically focused of ultraviolet light absorber with optical sheet, it is characterized in that,
In the activated deterioration test that utilizes metal halide lamp formula atmospheric exposure test (device specification: JTM G 01:2000, Japanese testing machine industry meeting) to carry out,
Through T
1Hour irradiation time test after 400nm～1850nm wavelength region may in the decline of average transmittance satisfy formula (1), promptly
τuv(0)+τuv(T
1)＞τ
0(0)+τ
0(T
1) ……(1)，
And the amount of the ultraviolet light absorber that contains in the decision base material makes the transmissivity of each wavelength in said wavelength region may descend below 10% from initial value,
Wherein,
T
1＝150×2.5×D
1/D
0 ……(3)
D
1: use sunshine optically focused with the average direct projection day exposure under the environment of optical sheet
D
0: average direct projection day exposure in actual place (Japanese Miyako Jima) of implementing outdoor exposure test
τ uv (0): sunshine optically focused of the present invention is with the average transmittance of the preceding 400nm～1850nm wavelength region may of the atmospheric exposure test of optical sheet
τ uv (T
1): sunshine optically focused of the present invention is with the atmospheric exposure test T of optical sheet
1The average transmittance of the 400nm after hour～1850nm wavelength region may
τ
0(0): except that the average transmittance that does not contain the 400nm～1850nm wavelength region may of sunshine optically focused identical the ultraviolet light absorber before with the atmospheric exposure test of optical sheet with the present invention
τ
0(T
1): except that not containing the atmospheric exposure test T of sunshine optically focused identical the ultraviolet light absorber with optical sheet with the present invention
1The average transmittance of the 400nm after hour～1850nm wavelength region may
Utilize the present invention can produce by be exposed to for a long time transmissivity that outdoor uv degradation causes descend little, make light gathering efficiency maintain initial value and the excellent Fresnel lens of mouldability.
Description of drawings
Fig. 1 is the skeleton diagram of light-focusing type photovoltaic power generation system.
Fig. 2 is the outdoor figure that exposes to the open air and promote the transmission change of the Fresnel lens that test is caused of expression.
Fig. 3 is the figure that expression reaches the transmission change of the Fresnel lens that the promotion test till 600 hours causes.
Fig. 4 is the figure of the transmission change of expression each wavelength of promoting the Fresnel lens of test after 600 hours.
Fig. 5 is the figure of the spectrum of expression sunshine.
Embodiment
Fig. 1 is the example that the solar power generating device of Fresnel lens is used in expression.Form the light that arrives lens and reflected the structure that is concentrated on the solar cell that is positioned at assigned position by lens section.And often at use glass nearby or metallic 2 collector lenses of solar cell, to improve light gathering efficiency.
Said Fresnel lens is a lot of as the situation that Fresnel lens aggregate shown in Figure 1 uses, and each Fresnel lens forms the concentric circles prism on the base material of transparent resin.In order to form the concentric circles prism, can be suitable for 2P (the Photo Polymerization: photopolymerization) method such as moulding of pressure forming, ejection formation, use uv curing resin.
As the transparent resin of base material, can adopt various transparent resins such as acryl resin, polycarbonate resin, but consider from this point of weatherability, preferably with acryl resin, especially polymethylmethacrylate (PMMA) resin is main resin.
Sunshine optically focused of the present invention contains ultraviolet light absorber with the base material of Fresnel lens, the deterioration that causes with the ultraviolet ray that prevents to contain in the sunshine.As the ultraviolet light absorber that contains, can adopt all kinds, but the not enough 400nm of absorbing wavelength end preferably at the scope Nei Zegengjia of 350nm～380nm, considers from this point, preferably adopt the ultraviolet light absorber of benzotriazole.
As shown in Figure 2, at Miyako Jima, the Fresnel lens that reality has implemented to contain the benzotriazole ultraviolet light absorber is the outdoor exposure test of PMMA resin with material, observes its transmission change.Its result shows that through 10 years outdoor exposing to the open air, transmissivity did not descend.
Then, use, under the regulation environment, implement the ultra weather resisteant test that promotes with the testing machine of device specification as the regulation of JTM G 01:2000.The ultra promotion atmospheric exposure test machine (SUV-F1) that device adopts Iwasaki Electric Co., Ltd. to make.The result of this test also expresses in Fig. 2.Can know that from its result 150 hours promotion test is equivalent to expose to the open air more than 10 years in the outdoor of Miyako Jima.
On the other hand, the representative regional environment of sunshine concentration module is being set shown in the table 1.When for example area, Hispanic Toledo is envisioned for the actual place that the sunshine module is set; Environmental facies ratio with Miyako Jima; Its sunshine-duration in the period of 1 is about 1.7 times of Miyako Jima environment, and different humidity to cause sunshine to absorb different, different latitude causes the sunshine angle different; Therefore expose to the open air 10 years of Miyako Jima, if for example then be equivalent to about 6.5 years exposing to the open air in the Toledo.Therefore, if consider the long-term use more than 25 years, must consider that then in the about 40 years use of Miyako Jima, promptly ultra promotion test period needs about 600 hours in the Toledo.Equally, imagination the place is set if small pot with a handle and a spout for boiling water or herbal medicine, then need implement about 410 hours ultra promotion test, U.S. Phoenix then approximately is 860 hours, same, Las Vegas then approximately is 950 hours, same, Miami then is approximately 570 hours.
Table 1
Above-mentioned formula (2) is with above-mentioned idea generalization.Be scaled with actual be provided with the place long-term use about 25 years suitable for the operating period of Miyako Jima, also represent the necessary test period of obtaining based on the dependency relation between the result of the result of the test of Miyako Jima and ultra promotion atmospheric exposure test machine.Be that formula (2) is " to promote test period T
1=with the latitude modified value of the steam vapour amount modified value * field of employment of the sunshine-duration modified value * field of employment of 25 years of Miyako Jima suitable promotion test period (150 * 2.5) * fields of employment " experimental formula.But, be the absolute steam vapour amount in the atmosphere though counterglow exerts an influence, normally announce average relative humidity.Therefore, multiply by average relative humidity, obtain the steam vapour amount of Miyako Jima and field of employment through the saturated steam amount in the average maximum air temperature that makes Miyako Jima and field of employment.As the value of sunshine-duration and the humidity and the highest temperature, preferably adopt the data of announcing by the country under the field of employment.
On the other hand, according to the difference that the place is set, be to announce the direct projection day exposure in 1 year in this place sometimes.In this case, can use formula (3) to replace said formula (2) to obtain and promote test period T
1
Fig. 3 representes the average transmittance that the Toledo is envisioned in the 400nm～1850nm wavelength coverage after 600 hours the promotion that the place is set is tested is changed.Use the spectrophotometer of U-3410 (Hitachi's manufacturing) when measuring transmissivity here.And with acryl resin (PMMA) as base material, and ultraviolet light absorber uses the JF-77 (manufacturing of north of the city KCC) of benzotriazole.
If the UVA agent concentration in the increase base material, then initial transmission can descend.This is because under the influence of ultraviolet light absorber, and light short about wavelength ratio 400nm is blocked, and when addition increases, with the painted phenomenon that ultraviolet light absorber itself causes takes place.The addition that therefore, should as far as possible suppress ultraviolet light absorber.On the other hand, if do not add ultraviolet light absorber, when then test period increased, the average transmittance in 400nm～1850nm wavelength coverage can descend, and after 600 hours, transmissivity descends about 14% with respect to initial value.Like this, in long-term the use, the general who has surrendered descends generated energy under the transmissivity of Fresnel lens condensing body self under being exposed to ultraviolet atmosphere.Under the situation of this decline as lower limit, the slippage that is necessary to make initial value is at least in 7%.And in promoting exposure test, this above decline can not take place.
Below, the transmissivity in the 400nm～1000nm wavelength coverage after promotion test in 600 hours shown in Fig. 4 is with respect to the rate of change of initial value.The resin deterioration that ultraviolet ray causes especially takes place in this wavelength coverage, because painted, transmissivity descends.Again, the light intensity of sunshine is as shown in Figure 5, and the intensity in this wavelength coverage is big, and therefore the transmission losses in this scope is relevant with generated energy to a great extent.Therefore, must be suppressed at the loss that takes place in this scope as far as possible, and must be with the damage control below 10%.From Fig. 4, addition is 0.02% o'clock, and the transmissivity that also takes place more than 30% at about 400nm wavelength descends.On the other hand; Can confirm that under 0.14% addition initial value does not change yet, therefore after test; Preferably add UVA dosage to more than at least 0.1% concentration, the concentration that UVA dosage adds to more than 0.14% is then better.
That is to say that the sunshine optically focused of sunshine module use is high as far as possible with the transmissivity that the Fresnel lens requirement is employed under the original state, and through the long-term few raw material of transmissivity decline that uses.Formula (1) expression has the condition of the raw material of above-mentioned characteristic; The left side is the transmissivity sum of the promotion test front and back of optical sheet of the present invention; The right is the base material identical with optical sheet shown in the left side, does not promptly contain transmissivity sum base material, that promote the test front and back of ultraviolet light absorber.Promote the T that test provides in formula (2) or formula (3) as stated
1Hour during implement.
τuv(0)+τuv(T
1)＞τ
0(0)+τ
0(T
1) ……(1)，
If the kind of said base material determines that then the right is by the conditional decision that the place is set.In the left side, the content of ultraviolet light absorber more greatly then τ uv (0) is more little, but τ uv is (T
1) then have the content of the ultraviolet light absorber bigger more at most tendency of (transmissivity descend few), be the formula that can provide suitable ultraviolet light absorber addition therefore.
On the other hand, as stated, UVA dosage causes painted the blocking-up with wavelength to cause that outside the initial transmission decline, when adjuvant increased, volatile ingredient increased during moulding, caused unfavorable condition when addition increases.Therefore if possible, preferably addition is suppressed in below 0.3%, if suppress in 0.2% with next better.
Claims (5)
1. a method for designing that in base material, comprises the resin system sunshine optically focused of ultraviolet light absorber with optical sheet is characterized in that,
In the activated deterioration test that utilizes metal halide lamp formula atmospheric exposure test (device specification: JTM G 01:2000, Japanese testing machine industry meeting) to carry out,
Through T
1Hour the test of irradiation time after the decline of average transmittance of 400nm～1850nm wavelength region may satisfy formula (1):
τuv(0)+τuv(T
1)＞τ
0(0)+τ
0(T
1) ……(1)，
And the amount of the ultraviolet light absorber that contains in the decision base material, so that the transmissivity of each wavelength descends below 10% from initial value in said wavelength region may,
Wherein,
T
1＝150×2.5×U
1/U
0
×{0.44×1n(W
1/W
0)+0.88}
×{(0.5×cos(α
1-23.4))+cosα
1}/{(0.5×cos(α
0-23.4))+cosα
0} …………(2)
U
1: use sunshine optically focused with the average sunshine time under the environment of optical sheet
W
1: use sunshine optically focused with the average water vapour amount under the environment of optical sheet
α
1: use the latitude of sunshine optically focused with the place of optical sheet
U
0: the actual sunshine-duration of implementing the place (Japanese Miyako Jima) of outdoor exposure test
W
0: the actual average water vapour amount of implementing the place (Japanese Miyako Jima) of outdoor exposure test
α
0: the actual latitude of implementing the place (Japanese Miyako Jima) of outdoor exposure test
τ uv (0): sunshine optically focused of the present invention is with the average transmittance of the preceding 400nm～1850nm wavelength region may of the atmospheric exposure test of optical sheet
τ uv (T
1): sunshine optically focused of the present invention with optical sheet through atmospheric exposure test T
1The average transmittance of the 400nm after hour～1850nm wavelength region may
τ
0(0): except that the average transmittance that does not contain the 400nm～1850nm wavelength region may of sunshine optically focused identical the ultraviolet light absorber before with the atmospheric exposure test of optical sheet with the present invention
τ
0(T
1): except that not containing the atmospheric exposure test T of sunshine optically focused identical the ultraviolet light absorber with optical sheet with the present invention
1The average transmittance of the 400nm after hour～1850nm wavelength region may.
2. a method for designing that in base material, comprises the resin system sunshine optically focused of ultraviolet light absorber with optical sheet is characterized in that,
In the activated deterioration test that utilizes metal halide lamp formula atmospheric exposure test (device specification: JTM G 01:2000, Japanese testing machine industry meeting) to carry out,
Through T
1Hour irradiation time test after the decline of average transmittance of 400nm～1850nm wavelength region may satisfy formula (1), promptly
τuv(0)+τuv(T
1)＞τ
0(0)+τ
0(T
1) ……(1)，
And the amount of the ultraviolet light absorber that contains in the decision base material, so that the transmissivity of each wavelength descends below 10% from initial value in said wavelength region may,
Wherein,
T
1＝150×2.5×D
1/D
0 ……(3)
D
1: use sunshine optically focused with the average direct projection day exposure under the environment of optical sheet
D
0: average direct projection day exposure in actual place (Japanese Miyako Jima) of implementing outdoor exposure test
τ uv (0): sunshine optically focused of the present invention is with the average transmittance of the preceding 400nm～1850nm wavelength region may of the atmospheric exposure test of optical sheet
τ uv (T
1): sunshine optically focused of the present invention is with the atmospheric exposure test T of optical sheet
1The average transmittance of the 400nm after hour～1850nm wavelength region may
τ
0(0): except that the average transmittance that does not contain the 400nm～1850nm wavelength region may of sunshine optically focused identical the ultraviolet light absorber before with the atmospheric exposure test of optical sheet with the present invention
τ
0(T
1): except that not containing the atmospheric exposure test T of sunshine optically focused identical the ultraviolet light absorber with optical sheet with the present invention
1The average transmittance of the 400nm after hour～1850nm wavelength region may.
3. claim 1 or 2 described sunshine optically focused is characterized in that with the method for designing of optical sheet, the decline of average transmittance with respect to initial value below 7%.
4. the described sunshine optically focused of each in the claim 1～3 is characterized in that with the method for designing of optical sheet, and base material is an acryl resin, and ultraviolet light absorber is a benzotriazole.
5. a sunshine optically focused is used optical sheet, it is characterized in that, adopts each the described method to add at least in the claim 1～4 that ultraviolet light absorber more than 0.14% is a characteristic to design.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009130388 | 2009-05-29 | ||
| JP2009-130388 | 2009-05-29 | ||
| PCT/JP2010/059100 WO2010137695A1 (en) | 2009-05-29 | 2010-05-28 | Fresnel lens sheet for solar collection and design method therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102460230A true CN102460230A (en) | 2012-05-16 |
| CN102460230B CN102460230B (en) | 2014-06-04 |
Family
ID=43222799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080033793.7A Expired - Fee Related CN102460230B (en) | 2009-05-29 | 2010-05-28 | Fresnel lens sheet for solar collection and design method therefor |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US9158042B2 (en) |
| EP (1) | EP2437086A4 (en) |
| JP (1) | JP5685186B2 (en) |
| KR (1) | KR101330013B1 (en) |
| CN (1) | CN102460230B (en) |
| TW (1) | TWI460473B (en) |
| WO (1) | WO2010137695A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104487874A (en) * | 2012-07-09 | 2015-04-01 | 株式会社可乐丽 | Optical element and concentrated photovoltaic device |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR112013019019A2 (en) * | 2011-01-28 | 2016-10-04 | Evonik Roehm Gmbh | solar concentration device |
| DE102011003311A1 (en) * | 2011-01-28 | 2012-08-02 | Evonik Röhm Gmbh | Long-life optical concentrator based on a special Fresnell lens made of polymer materials for solar energy generation |
| JP5814725B2 (en) * | 2011-10-03 | 2015-11-17 | 住友電気工業株式会社 | Concentrating solar power generation module and concentrating solar power generation panel |
| ITAN20120066A1 (en) * | 2012-06-01 | 2013-12-02 | Giacomo Galli | PERFECTED SOLAR PANEL. |
| JP2016115689A (en) * | 2013-04-12 | 2016-06-23 | 株式会社クラレ | Optical element, design method and condensing solar power generation device |
| CN103715289B (en) * | 2013-12-23 | 2016-01-13 | 华北电力大学 | The method for designing of spectrum uniform focal plane Fresnel lens |
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| US8237044B2 (en) * | 2005-06-07 | 2012-08-07 | Sharp Kabushiki Kaisha | Concentrating solar power generation unit, concentrating solar power generation apparatus, concetrating lens, concentrating lens structure, and method of manufacturing concentrating lens structure |
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2010
- 2010-05-28 KR KR1020117030446A patent/KR101330013B1/en not_active IP Right Cessation
- 2010-05-28 EP EP10780649.9A patent/EP2437086A4/en not_active Withdrawn
- 2010-05-28 TW TW099117176A patent/TWI460473B/en not_active IP Right Cessation
- 2010-05-28 WO PCT/JP2010/059100 patent/WO2010137695A1/en active Application Filing
- 2010-05-28 CN CN201080033793.7A patent/CN102460230B/en not_active Expired - Fee Related
- 2010-05-28 JP JP2011516072A patent/JP5685186B2/en not_active Expired - Fee Related
- 2010-05-28 US US13/375,055 patent/US9158042B2/en not_active Expired - Fee Related
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| JP2005099802A (en) * | 2003-09-24 | 2005-04-14 | Crf Soc Consortile Per Azioni | Multifocal condenser for element for converting solar radiation into electric, heat or chemical energy |
| US8237044B2 (en) * | 2005-06-07 | 2012-08-07 | Sharp Kabushiki Kaisha | Concentrating solar power generation unit, concentrating solar power generation apparatus, concetrating lens, concentrating lens structure, and method of manufacturing concentrating lens structure |
| CN201726343U (en) * | 2010-06-19 | 2011-01-26 | 天津蓝天太阳科技有限公司 | Frame type concentrating photovoltaic component |
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| CN104487874A (en) * | 2012-07-09 | 2015-04-01 | 株式会社可乐丽 | Optical element and concentrated photovoltaic device |
| CN104487874B (en) * | 2012-07-09 | 2016-08-24 | 株式会社可乐丽 | Optical element and light-focusing type solar power generating device |
| US9553227B2 (en) | 2012-07-09 | 2017-01-24 | Kuraray Co., Ltd. | Optical element and concentrating photovoltaic device |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI460473B (en) | 2014-11-11 |
| EP2437086A1 (en) | 2012-04-04 |
| JP5685186B2 (en) | 2015-03-18 |
| US20120132871A1 (en) | 2012-05-31 |
| JPWO2010137695A1 (en) | 2012-11-15 |
| KR101330013B1 (en) | 2013-11-18 |
| WO2010137695A1 (en) | 2010-12-02 |
| TW201113557A (en) | 2011-04-16 |
| US9158042B2 (en) | 2015-10-13 |
| KR20120023115A (en) | 2012-03-12 |
| CN102460230B (en) | 2014-06-04 |
| EP2437086A4 (en) | 2017-08-09 |
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